Seongheon Kim

TL;DR: Data showed that both atmospheric dispersion and coagulation contributed to the rapid decrease in particle number concentration and change in particle size distribution with increasing distance from the freeway.

TL;DR: In this article, the authors found that the relative concentration of CO, BC and particle number decreased exponentially and tracked each other well as one moves away from the freeway, and both atmospheric dispersion and coagulation appeared to contribute to the rapid decrease in particle number concentration and change in particle size distribution with increasing distance from a freeway.

TL;DR: It is demonstrated that it is possible to use the stratified oxidative stress model developed for DEP to interpret the biological effects of coarse and fine PM, and has important implications for the selection of relevant biological endpoints for in vivo studies.

TL;DR: In this paper, the authors present the development and bench testing of a versatile aerosol concentration enrichment system (VACES) capable of simultaneously concentrating ambient particles of the coarse, fine and ultrafine size fractions for conducting in vivo and in vitro studies.

TL;DR: The differences observed in the ultrafine particle distribution and temporal trends clearly demonstrated that mechanisms other than direct emissions play an important role in the formation of ultrafine particles in receptor sites of the Los Angeles Basin.